Cited by 228Neuroinflammation and Neurodegeneration MechanismsAlzheimer's disease research and treatmentsNeuroscience and Neuropharmacology Research

APOE genotype alters glial activation and loss of synaptic markers in mice

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Zhu, Yuangui, Nwabuisi‐Heath, Evelyn, Dumanis, Sonya B., Tai, Leon M., Yu, Chunjiang, Rebeck, G. William, Ladu, Mary Jo·2012·Glia

Abstract

The ϵ4 allele of the Apolipoprotein E (APOE) gene is the strongest genetic risk factor for late‐onset Alzheimer's disease (AD), and affects clinical outcomes of chronic and acute brain damages. The mechanisms by which apoE affect diverse diseases and disorders may involve modulation of the glial response to various types of brain damage. We examined glial activation in a mouse model where each of the human APOE alleles are expressed under the endogenous mouse APOE promoter, as well as in APOE knock‐out mice. APOE4 mice displayed increased glial activation in response to intracerebroventricular lipopolysaccharide (LPS) compared to APOE2 and APOE3 mice by several measures. There were higher levels of microglia/macrophage, astrocytes, and invading T‐cells after LPS injection in APOE4 mice. APOE4 mice also displayed greater and more prolonged increases of cytokines (IL‐1β, IL‐6, TNF‐α) than APOE2 and APOE3 mice. We found that APOE4 mice had greater synaptic protein loss after LPS injection, as measured by three markers: PSD‐95, drebin, and synaptophysin. In all assays, APOE knock‐out mice responded similar to APOE4 mice, suggesting that the apoE4 protein may lack anti‐inflammatory characteristics of apoE2 and apoE3. Together, these findings demonstrate that APOE4 predisposes to inflammation, which could contribute to its association with Alzheimer's disease and other disorders. © 2012 Wiley Periodicals, Inc.

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Authors
Zhu, Y., Nwabuisi‐Heath, E., Dumanis, S. B., Tai, L. M., Yu, C., Rebeck, G. W., & Ladu, M. J.
Affiliations
  • Fujian Medical University (CN)
  • University of Illinois Chicago (US)
  • Georgetown University (US)
Corresponding author
Ladu, Mary Jo
Venue
Glia
Publisher
Wiley
Published
2012-01-06
Volume
60
Issue
4
Pages
559-569
ISSN
  • 0894-1491 (ISSN-L)
  • 1098-1136
OpenAlex
W2127101809
Cited by
224
References
54
Citations by year
2026: 12 · 2025: 16 · 2024: 14 · 2023: 20 · 2022: 25 · 2021: 29 · 2020: 21 · 2019: 20 · 2018: 8 · 2017: 10 · 2016: 9 · 2015: 12 · 2014: 13 · 2013: 12 · 2012: 3
FWCI
6.44
Type
journal article
Language
en
Open access
Locations
  • Glia (publishedVersion)
  • PubMed (publishedVersion)
  • Europe PMC (PubMed Central) (acceptedVersion)
  • PubMed Central (acceptedVersion)
Funders
  • National Institutes of Health
  • University of Illinois at Chicago
  • National Institute on Aging (P01AG030128)
Topics
  • Life Sciences › Neuroscience › Neurology › Neuroinflammation and Neurodegeneration Mechanisms
  • Health Sciences › Medicine › Physiology › Alzheimer's disease research and treatments
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neuroscience and Neuropharmacology Research
Keywords
APOE ε4, apolipoprotein E, glial activation, neuroinflammation, lipopolysaccharide, microglia, astrocytes, T cell infiltration, cytokines, PSD-95, synaptophysin, Alzheimer's disease risk
MeSH terms
Disks Large Homolog 4 Protein, Analysis of Variance, Animals, Antigens, Differentiation, Apolipoproteins E, Brain, Enzyme-Linked Immunosorbent Assay, Gene Expression Regulation, Genotype, Glial Fibrillary Acidic Protein, Humans, Injections, Intraventricular, Lipopolysaccharides, Membrane Proteins, Mice, Transgenic, Neuroglia, Synapses, Cytokines, Mice, Guanylate Kinases, Apolipoprotein E3, Apolipoprotein E4, Apolipoprotein E2

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